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应用化学专业英语第二版万有志主编版(课后答案和课文翻译)
If the mass of a 12C atom is exactly 12 amu,then the mass of a 1H atom to five significant figures must be 1.0078 amu. 12 amu x 0.083986 = 1.0078 amu
（2）
First we calculate k and then use the first-order rate equation.
k?loglog0.693?1.21?10?4/yr5730yr?A?0kt??A?2.303?41.0001.21?10/yr?t0.4772.303?2.303??log2.09??6.1?103?6100yrt?1.21?10?4/yr
The bone was tossed away (more precisely, the animal whose bone was died) about 6100 years ago, or about 4100 B.C. We can thus be sure that a village was in existence at that place at that time.
Unit 7 The Nomenclature of Inorganic Substances
I. Comprehension
1.A 2.B 3.C 4.C 5.B
II. Give the systematic name for the following
ammonium ion ; copper(II) ion ; strontium ion; Ccopper(I) ion; iron(II) ion; zinc ion; hydrogen ion; lead((II) ion; aluminum;
silver ion; magnesium ion; chromium(III) ion; Barium ; Manganese(II) ion; iron(III) ion; calcium ion; mercury(II) ion; chromium(II) ion; tin(II) ion.
carbon monoxide; ditrogen trioxide; carbon dioxide; diphosphorus pentoxide; sulfur trioxide; dichlorine heptoxide
arsenate ion; sulfite ion; hydride ion; arsenite ion; bromide ion; hydroxide ion; phosphate ion; chlorate ion; hypochlorite ion; phosphate ion; chloride ion; iodate ion; carbonate ion; chlorite ion; nitrate ion;
chromate ion; cyanide ion; iodide ion; dichromate ion; fluoride ion; nitrate ion;
oxide ion; hydrogen carbonate ion; nitrite ion; sulfide ion; hydrogen sulfate ion; perchlorate ion; sulfate ion; hydrogen sulfite ion; permanganate ion.
III. Complete the table. Formula Old name Systematic name iron (II) oxide iron (III) oxide tin(II) hydroxide tin(IV) hydroxide mercury sulfate mercury sulfate sodium hypochlorite potassium dichromate copper(II) arsenate (I) (II) FeO Fe2O3 Sn(OH)2 Sn(OH)4 Hg2SO4 HgSO4 NaCLO K2Cr2O7 Cu3(AsO4)2